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coldgirl [10]
3 years ago
9

LESSON 3

Mathematics
1 answer:
katovenus [111]3 years ago
6 0

Answer:

1. 4+x

2. x-6

3. 8x

4. x/7

5. x+5=15

Step-by-step explanation:

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2. A circular patio has a diameter of 18 feet. How
lisabon 2012 [21]

Answer:  So to cover the patio it would take 255 whole tiles.  254.469 if you want to be exact.

Step-by-step explanation:

When finding flooring needed we are finding for area.  We know the formula for finding the area of a circle is A=\pi r^{2} so we plug in our known variables...

we know r because radius is half of diameter and diameter was given in problem.  So half of 18 is 9.

r=9

A=\pi 9^{2}

A=\pi81

A=254.469

8 0
3 years ago
Today, everything at a store is on sale. The store offers a 20% discount.
kotykmax [81]

Answer:

a) $19.2

b) 0.8x

c) $17.5

Step-by-step explanation:

1. We want to find the discount price given the regular price

The discount is 20%

so the discount price will be;

24 - 20% of 24

24 - 4.8 = $19.2

b) We have this as;

x - (20% of x)

x - 0.2x = 0.8x

c) let the original price be x

x - 20% of x = 14

x - 0.2x = 14

0.8x = 14

x = 14/0.8

x = $17.5

6 0
3 years ago
12. Part A: Katya is traveling by train to visit her relatives in another state.
Contact [7]
The 60 represents the rate at which the train is traveling in km per hour. So, I believe the answer would be D (sorry if this is wrong, to be honest I’m just using context clues)
7 0
3 years ago
A circle is centered at the point (-7,-1) and passes through the point (8,7).
cluponka [151]
<span>The radius of the circle is __17___ units.
(Enter a whole number, not decimals)

The point, (-15, _-16_ ) lies on it's circle. </span>
6 0
4 years ago
The height, h, of a falling object t seconds after it is dropped from a platform 300 feet above the ground is modeled by the fun
pshichka [43]
Average rate = [h(3) - h(0)]/(3 - 0)
h(3) = 300 - 16(3)^2 = 300 - 16(9) = 300 - 144 = 156
h(0) = 300 - 16(0)^2 = 300

average rate = (156 - 300)/3 = -144/3 = -48

Therefore, the object falls with an average rate of 48 ft/s during the first 3 seconds.
7 0
3 years ago
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